Ice can with integral air tube



Nov. 30, 1937. w. R. ROBINSON ICE CAN WITH INTEGRAL AIR TUBE Filed Jan.31, 1936 fIIIIIIIIIII/IIIIIIIII INVENTOR MAL/AM Fa /M50 flcK/cva M 01,?ATTORNEYE Patented Nov. 30, 1937 UNITED STATES FATENT OFFICE 2' Claims.

raw water system of ice making.

In the manufacture of ice by the raw water system, each freezing can isusually provided with c of ice is formed in the can, and any impuritiespresent in the water are not frozen into the ice but are collected inthe which remains unfrozen freezing period.

protected from internal injury. It is an object construct the freezingcan that a conduit for the of the can, and in a manner to successfullyguard against damage to the conduit. Other objects and features ofnovelty will ap of the present application, the accompanying drawing, inwhich Fig. 1 is a perspective View of an ice can embodying theinvention, a portion of the can being broken away to more fullyillustrate the invention.

Fig. 2 is a fragmental perspective view on a larger scale showing thatcorner of the can in whichthe air conduit is located, and

Fig. 3 is a fragmental horizontal sectional View taken substantially onthe line 33 of Fig. 2.

In the drawing I have illustrated an ice can comprising as its principalparts a bottom At the joint illustrated in Fig. 2 the wall element l2has a flange it which is connected with the main part of the elementbend around a short radius. The side Wall element H has a portion l1which engages the inner surface of flange [6. This portion H, which thusoverlaps the flange I6, is riveted or otherwise secured to the flange I6, forming the seam l4 which extends throughout the height of the can.

The element II beyond joint I4 is so bent as to form an integral tubularmember which fits snugly within the radius of the can corner, andconstitutes an air conduit I8.

being understood, of course, that thls is done before the elements llriveted together. The free dling of the cans otherwise. I

A small section of the tube l8 may be removed from its lower end, asillustrated in Fig. 1, so as I2 by a right angle to provide an exit forair. The tube may also be drilled, as at 20, to provide air exits ifdesired. Any suitable means for connecting the upper extremity of thetube to an air preessure system may be utilized.

After the seams l3 and M are formed and before the base It is attachedto the side wall elements, the seam corners of the latter are dipped oneat a time into molten solder or the like, and the excess solder isdrained off by tilting the assembled side elements toward one end. Thisnot only seals the seams, but also results in a line of sealing material2| being formed in the angle between the tube l8 and the wall elementl2. A similar line 22 of sealing material is formed within the tube [8at the joint between the sharp bend l9 and the edge of the sheet fromwhich the tube is formed. The seal 2| would probably be sufiicient torender the tube fluidtight, and the seal 22 provides a second barrieragainst the leakage of air out of the tube during its travel down to thelower. extremity of the latter.

Variations from the described structure may be employed. Accordingly, Idesire it to be understood that the scope of the invention is to beregarded as defined exclusively by the appended claims, rather than bythe foregoing description or the accompanying illustration.

Having thus described my invention I claim:

1. A freezing can for use in the manufacture of ice, having a verticalseam formed of two overlapping elements only joined together adjacent acorner of the can, the inner overlapping element being bent sharplyinward between the seam and the corner of the can and then curvedbackwardly and outwardly into a tubular member filling the corner bendof the can and constituting an air conduit extending from the top to thebottom of the can, the free edge of the inner element being concealedand protected and lying adjacent the said sharp bend a seal between theouter wall of the tubular member and the adjacent wall of the can, and areinforcing band secured to the can at the upper edge thereof extendingover said vertical seam.

2. In a freezing can for use in the manufacture of ice, two wallelements meeting at one of the corners of the can, the outer elementhaving a right angle flange extending beyond the corner, the innerelement engaging said flange, a seam between said inner element andflange spaced from the corner of the can, a tubular member formed insaid inner element on theside of the seam toward the can corner, themetal of which the tubular'member is formed being curved first inwardlyand then outwardly behind itself, terminating behind the first curvewhereby the edge of the metal is held in place without fastenings, andwhereby there aretwo thicknesses of metal only in the vertical seam, anda reinforcing band secured to the can at the upper edge thereofextending over said vertical seam.

WILLIAM R. ROBINSON.

